1, yam mucus contains a variety of active substances such as protein enzyme, and some people are sensitive to these substances, so the hand that peels yam will itch.

2. If there has been itching and discomfort after peeling yam, that is, skin allergy, it is recommended to treat it comprehensively, and it is expected to achieve better therapeutic effect.

3. First, local cleaning, eliminating local sensitive substances, local external washing with physiological saline or local wet compress with 20g of boric acid and 500ml of cold boiled water can achieve local detumescence, relieve itching and remove substances on the surface.

4. Second, oral drugs, commonly used are chlorphenamine, loratadine, cetirizine, etc. In addition, vitamin C, calcium gluconate, etc. can also be taken orally to achieve anti-allergic, itching and anti-inflammatory purposes.

5. Thirdly, topical drugs can be used, such as Perezon Ointment, Desonide Ointment, Hydrocortisone Butyrate Ointment, etc., which can achieve the purpose of relieving itching, reducing swelling and diminishing inflammation.